What are tags in HTML

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    Keymaster
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      In HTML, tags are the fundamental building blocks used to create elements in a web document. These tags define the structure and content of a web page, allowing web browsers to interpret and display the content correctly. Tags are enclosed in angle brackets (< >) and typically come in pairs: an opening tag and a closing tag, with the content placed between them.

      Basic Structure of Tags

      • Opening Tag: This marks the beginning of an element. It includes the element’s name and may contain attributes.
        html
        <tagname attribute="value">
      • Closing Tag: This marks the end of an element. It includes a forward slash before the element’s name.
        html
        </tagname>
      • Self-Closing Tag: Some elements do not have content and can be self-closed. In HTML5, the forward slash is optional.
        html
        <tagname attribute="value" />

      Common HTML Tags and Their Uses

      1. Document Structure Tags
        • <!DOCTYPE html>: Declares the document type and version of HTML.
        • <html>: The root element of an HTML document.
        • <head>: Contains meta-information about the document.
        • <body>: Contains the content of the document.
      2. Head Section Tags
        • <title>: Sets the title of the document, which appears in the browser’s title bar or tab.
        • <meta>: Provides metadata such as character set, viewport settings, and keywords.
        • <link>: Links external resources like stylesheets.
        • <style>: Contains internal CSS styles.
        • <script>: Includes or references JavaScript code.
      3. Content Section Tags
        • <h1> to <h6>: Define headings, with <h1> being the most important and <h6> the least.
        • <p>: Defines a paragraph.
        • <a>: Creates a hyperlink.
        • <img>: Embeds an image.
        • <ul>, <ol>, <li>: Create unordered (bulleted) and ordered (numbered) lists.
        • <div>: Defines a division or section, used for grouping content.
        • <span>: Inline container for text, used for styling purposes.
      4. Form and Input Tags
        • <form>: Defines an HTML form for user input.
        • <input>: Defines an input field.
        • <textarea>: Defines a multiline text input.
        • <button>: Defines a clickable button.
        • <select>, <option>: Creates a dropdown list.
      5. Media Tags
        • <audio>: Embeds audio content.
        • <video>: Embeds video content.
        • <source>: Specifies multiple media resources for <audio> and <video>.
        • <embed>: Embeds external content like a plugin.
      6. Table Tags
        • <table>: Defines a table.
        • <tr>: Defines a table row.
        • <td>: Defines a table cell.
        • <th>: Defines a table header cell.
        • <thead>, <tbody>, <tfoot>: Group table header, body, and footer content.

      Example HTML Document

      Here’s a simple example of an HTML document using various tags:

      <!DOCTYPE html>
      <html lang=”en”>
      <head>
      <meta charset=”UTF-8″>
      <meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
      <title>Example HTML Document</title>
      <link rel=”stylesheet” href=”styles.css”>
      </head>
      <body>
      <header>
      <h1>Welcome to My Website</h1>
      <nav>
      <ul>
      <li><a href=”#home”>Home</a></li>
      <li><a href=”#about”>About</a></li>
      <li><a href=”#contact”>Contact</a></li>
      </ul>
      </nav>
      </header>
      <main>
      <section id=”home”>
      <h2>Home</h2>
      <p>This is the home section of the website.</p>
      </section>
      <section id=”about”>
      <h2>About</h2>
      <p>This is the about section of the website.</p>
      </section>
      <section id=”contact”>
      <h2>Contact</h2>
      <form action=”/submit” method=”post”>
      <label for=”name”>Name:</label>
      <input type=”text” id=”name” name=”name”>
      <label for=”email”>Email:</label>
      <input type=”email” id=”email” name=”email”>
      <button type=”submit”>Submit</button>
      </form>
      </section>
      </main>
      <footer>
      <p>&copy; 2024 My Website</p>
      </footer>
      </body>
      </html>

      In this example:

      • The <html> element is the root element.
      • The <head> section contains metadata and links to external resources.
      • The <body> section contains the visible content, structured with headers, navigation, sections, and a form.

      HTML tags are essential for creating structured, well-formed web documents. Understanding the purpose and proper use of these tags is crucial for web development and ensuring that web pages are displayed correctly across different browsers and devices.

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